[PATCH 12/17] gpio: gpiolib.c: fix a doc warning

[Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>]

Use a different markup for the ERR_PTR, as %FOO doesn't work
if there are parenthesis. So, use, instead:

	``ERR_PTR(-EINVAL)``

This fixes the following warning:

	./drivers/gpio/gpiolib.c:139: WARNING: Inline literal start-string without end-string.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
 drivers/gpio/gpiolib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index f31b1d46599e..74d8973025da 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -136,7 +136,7 @@ EXPORT_SYMBOL_GPL(gpio_to_desc);
  * @hwnum: hardware number of the GPIO for this chip
  *
  * Returns:
- * A pointer to the GPIO descriptor or %ERR_PTR(-EINVAL) if no GPIO exists
+ * A pointer to the GPIO descriptor or ``ERR_PTR(-EINVAL)`` if no GPIO exists
  * in the given chip for the specified hardware number.
  */
 struct gpio_desc *gpiochip_get_desc(struct gpio_chip *chip,
-- 
2.24.1